Live feed enrichments using microalgae for pikeperch (Sander lucioperca) larval culture

0585479 - MBÚ 2025 RIV US eng J - Journal Article
Yanes-Roca, C. - Štěrbová, Karolína - Mráz, J. - Veselý, L. - Malinovskyi, O. - Pěnka, T. - Masojídek, Jiří - Policar, T.
Live feed enrichments using microalgae for pikeperch (Sander lucioperca) larval culture.
Journal of the World Aquaculture Society. Roč. 55, č. 2 (2024), č. článku e13059. ISSN 0893-8849. E-ISSN 1749-7345
Grant - others:European Regional Development Fund(CZ) ATCZ221
Program: Interreg ČR-At
Institutional support: RVO:61388971
Keywords : rotifers brachionus-plicatilis * solea-senegalensis larvae * essential fatty-acids * marine fish * stress tolerance * sparus-aurata * growth * survival * artemia * l. * Chlorella * fatty acids * first feeding * fish larvae * rotifers * Trachydiscus
OECD category: Fishery
Impact factor: 2.8, year: 2022
Method of publishing: Limited access
https://onlinelibrary.wiley.com/doi/10.1111/jwas.13059

This trial aimed to customize pikeperch (Sander lucioperca) larval nutrition using live feed enrichments based on Chlorella vulgaris and Trachydiscus minutus. Pikeperch larvae were fed with rotifers and Artemia enriched with C. vulgaris and T. minutus during the first 17 days after exogenous feeding (started 4 days post-hatching [dph]) and only Artemia until 20 dph. Larvae were exposed to seven different enrichments: (a) Nannochloropsis occulata (Nanno 3600 reed Mariculture) (Control), (b) C. vulgaris cultured at 20 degrees C in BG-117 medium (BG20), (c) C. vulgaris cultured at 30 degrees C in BG-117 medium (BG30), (d) T. minutus cultured at 15 degrees C (T15), (e) T. minutus cultured at 25 degrees C (T25), (f) C. vulgaris cultured at 20 degrees C in urea medium (U20), and (g) C. vulgaris cultured at 30 degrees C in urea medium (U30). After 20 days, no significant differences were found between treatments on total length, standard length, myomere height, and eye diameter. On the contrary, significant differences were found in larval fatty acid composition after the trial period. Larvae from the BG30 treatment showed a significantly higher concentration of docosahexaenoic acid (5.61%), and larvae from the T25 treatment had a higher concentration of eicosapentaenoic acid 12.95%. Furthermore, larvae from the U20 treatment had a significantly higher arachidonic acid concentration of 0.116%. Overall, regarding essential fatty acid concentration, a significant difference was observed between the control treatment (Nannochloropsis) and the other treatments. No adverse effects were found on growth or survival when Nannochloropsis-enriched live feed was replaced with the other enrichments. This trial's results will help optimize the pikeperch larvae's nutritional requirements and diversify the live feed enrichments used during the first feeding.
Permanent Link: https://hdl.handle.net/11104/0353165